We would like to thank the following individuals for their valued input
on the design and implementation of pr3Da:
Arnar Birgisson, Bjarni {\TH}{\'{o}}r {\'{A}}rnason, 
Bj{\"{o}}rn {\TH}{\'{o}}r J{\'{o}}nsson, K{\'{a}}ri Har{\dh}arson and 
P{\'{a}}ll R{\'{u}}nar {\TH}r{\'{a}}insson.